/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2023 Cloud Software Group, Inc. All rights reserved.
 * http://www.jaspersoft.com
 *
 * Unless you have purchased a commercial license agreement from Jaspersoft,
 * the following license terms apply:
 *
 * This program is part of JasperReports.
 *
 * JasperReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JasperReports is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.jasperreports.types.date;

import java.io.Serializable;
import java.util.TimeZone;

import net.sf.jasperreports.engine.JRConstants;

/**
 * <p>Basic implementation of {@link DateRange}.
 * Provides generic methods for all implementation</p>
 *
 * @author Sergey Prilukin
 */
public abstract class AbstractDateRange implements DateRange, Serializable 
{
	private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;

	protected String expression;
	protected TimeZone timeZone;

	protected AbstractDateRange() {
	}

	protected AbstractDateRange(String expression, TimeZone timeZone) {
		this.expression = expression;
		this.timeZone = timeZone;
	}

	protected void validateExpression(String expression) throws InvalidDateRangeExpressionException {
		if (expression == null) {
			throw new IllegalArgumentException("Expression can't be null.");
		}
	}

	@Override
	public String toString() 
	{
		return expression;
	}
}
